diff --git a/x-pack/legacy/plugins/siem/server/lib/detection_engine/rules/update_prepacked_rules.ts b/x-pack/legacy/plugins/siem/server/lib/detection_engine/rules/update_prepacked_rules.ts
index d71bd0ee2c58e..0d7fb7918b67e 100644
--- a/x-pack/legacy/plugins/siem/server/lib/detection_engine/rules/update_prepacked_rules.ts
+++ b/x-pack/legacy/plugins/siem/server/lib/detection_engine/rules/update_prepacked_rules.ts
@@ -14,7 +14,7 @@ export const updatePrepackagedRules = async (
   alertsClient: AlertsClient,
   actionsClient: ActionsClient,
   savedObjectsClient: SavedObjectsClientContract,
-  rules: RuleAlertParamsRest[],
+  rules: PrepackagedRules[],
   outputIndex: string
 ): Promise<void> => {
   await rules.forEach(async rule => {